If it's the Shelburne Falls center, I recall the sitting being closer to 14 hours per day with no timed sitting; i.e. you're meant to sit from break period to b

If it's the Shelburne Falls center, I recall the sitting being closer to 14 hours per day with no timed sitting; i.e. you're meant to sit from break period to break period, basically 4+ hours at a stretch. Of course you could get up to go to the bathroom (read: escape), but some of the experienced students just sat straight through, impressive letting go. That kind of practice is a heavy duty biological restructuring, no matter how many times the instructor says, "No I, no me", the knees certainly feel like they have nails drilled into them ;-) The group energy carries you through, I suspect not many could do a 10 day Vipasana retreat alone.